Is it a small laundromat, or do you just not want to accept money from all customers?

What do you sell/provide?

Could you tell us why you chose to do that?

partly to seize a market niche and avoid fees, partly as a proof of concept for others (i wrote up the technical details), and partly because the product is crypto-adjacent, which most CC processors won't touch. i highly recommend the software i use, you can fairly easily turn it into an automated vending machine for digital goods that relies on no middlemen: https://btcpayserver.org/

my business is not even close to legally questionable but i prefer not to dox myself on this account. i found a friendly CC processor that i'm waiting on approval from, so it will be hybrid eventually.